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답안 #420030

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
420030 2021-06-08T00:55:16 Z jamezzz Financial Report (JOI21_financial) C++17
100 / 100
 412 ms 38708 KB 
#include <bits/stdc++.h>
using namespace std;

#define sf scanf
#define pf printf
#define fi first
#define se second
#define pb push_back
#define INF 1023456789
#define all(x) x.begin(),x.end()
typedef pair<int,int> ii;

int n,d,p[300005],dp[300005],mn[300005],rt[300005];
deque<ii> dq;
vector<ii> v;

struct node{
	int s,e,m,v;
	node *l,*r;
	node (int _s,int _e){
		s=_s;e=_e;m=(s+e)/2;v=0;
		if(s!=e)l=new node(s,m),r=new node(m+1,e);
	}
	void up(int x,int nv){
		if(s==x&&e==x){ v=nv;return; }
		if(x<=m)l->up(x,nv);
		else r->up(x,nv);
		v=max(l->v,r->v);
	}
	int qry(int x,int y){
		if(s==x&&e==y)return v;
		if(y<=m)return l->qry(x,y);
		if(x>m)return r->qry(x,y);
		return max(l->qry(x,m),r->qry(m+1,y));
	}
}*root;

int main(){
	sf("%d%d",&n,&d);
	for(int i=0;i<n;++i){
		sf("%d",&p[i]);
		while(!dq.empty()&&dq.back().fi>=p[i])dq.pop_back();
		dq.push_back(ii(p[i],i));
		while(dq.front().se<=i-d)dq.pop_front();
		if(i>=d-1)mn[i]=dq.front().fi;
		else mn[i]=INF;
	}
	root=new node(0,n-1);
	while(!dq.empty())dq.pop_back();
	for(int i=n-1;i>=0;--i){
		while(!dq.empty()&&dq.front().fi<mn[i])dq.pop_front();
		dq.push_front(ii(mn[i],i));
		//if this is i+d, binary search to find p[i-d]
		if(i-d<0)break;
		if(dq.empty())rt[i-d]=n-1;
		else{
			int lo=0,hi=dq.size()-1,mid,res=n-1;
			while(lo<=hi){
				mid=(lo+hi)/2;
				if(dq[mid].fi<=p[i-d])lo=mid+1;
				else{
					res=dq[mid].se;hi=mid-1;
				}
			}
			rt[i-d]=res;
		}
	}
	/*
	for(int i=0;i<n;++i)pf("%d ",mn[i]);
	pf("\n");
	for(int i=0;i<n;++i)pf("%d ",rt[i]);
	pf("\n");
	*/
	for(int i=0;i<n;++i){
		v.pb(ii(p[i],-i));
	}
	//sort in descending p[i]
	sort(all(v),greater<ii>());
	for(int j=0;j<n;++j){
		int i=-v[j].se;
		if(i+d>n-1){//can take anything after it
			dp[i]=root->qry(i,n-1)+1;
			root->up(i,dp[i]);
			continue;
		}
		
		dp[i]=root->qry(i,rt[i])+1;
		root->up(i,dp[i]);
	}
	int ans=0;
	for(int i=0;i<n;++i){
		ans=max(ans,dp[i]);
	}
	pf("%d\n",ans);
}

/*
7 1
100 600 600 200 300 500 500
*/

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:39:4: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |  sf("%d%d",&n,&d);
      |    ^
Main.cpp:41:5: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |   sf("%d",&p[i]);
      |     ^

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 216 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 292 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 216 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 292 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 216 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 292 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 5 ms 1100 KB Output is correct
42 Correct 5 ms 1100 KB Output is correct
43 Correct 5 ms 1100 KB Output is correct
44 Correct 4 ms 1100 KB Output is correct
45 Correct 5 ms 1100 KB Output is correct
46 Correct 5 ms 1100 KB Output is correct
47 Correct 5 ms 1100 KB Output is correct
48 Correct 5 ms 1100 KB Output is correct
49 Correct 5 ms 1100 KB Output is correct
50 Correct 5 ms 1220 KB Output is correct
51 Correct 4 ms 1100 KB Output is correct
52 Correct 5 ms 1100 KB Output is correct
53 Correct 4 ms 1228 KB Output is correct
54 Correct 5 ms 1228 KB Output is correct
55 Correct 5 ms 1100 KB Output is correct
56 Correct 5 ms 1100 KB Output is correct
57 Correct 5 ms 1100 KB Output is correct
58 Correct 3 ms 1152 KB Output is correct
59 Correct 3 ms 1100 KB Output is correct
60 Correct 4 ms 1100 KB Output is correct
61 Correct 6 ms 1228 KB Output is correct

Subtask #4
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 163 ms 38708 KB Output is correct
2 Correct 210 ms 36496 KB Output is correct
3 Correct 351 ms 36212 KB Output is correct
4 Correct 346 ms 36168 KB Output is correct
5 Correct 265 ms 36156 KB Output is correct
6 Correct 337 ms 36236 KB Output is correct
7 Correct 162 ms 38484 KB Output is correct
8 Correct 153 ms 36120 KB Output is correct
9 Correct 177 ms 37776 KB Output is correct
10 Correct 153 ms 36196 KB Output is correct
11 Correct 225 ms 36132 KB Output is correct
12 Correct 243 ms 36112 KB Output is correct
13 Correct 282 ms 36148 KB Output is correct
14 Correct 336 ms 36168 KB Output is correct

Subtask #5
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 181 ms 35028 KB Output is correct
2 Correct 272 ms 34976 KB Output is correct
3 Correct 311 ms 35004 KB Output is correct
4 Correct 321 ms 34984 KB Output is correct
5 Correct 259 ms 35040 KB Output is correct
6 Correct 302 ms 35016 KB Output is correct
7 Correct 150 ms 37392 KB Output is correct
8 Correct 140 ms 35076 KB Output is correct
9 Correct 201 ms 35020 KB Output is correct
10 Correct 211 ms 34876 KB Output is correct
11 Correct 293 ms 35000 KB Output is correct
12 Correct 210 ms 34956 KB Output is correct

Subtask #6
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 216 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 292 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 1 ms 332 KB Output is correct
37 Correct 1 ms 332 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 332 KB Output is correct
41 Correct 5 ms 1100 KB Output is correct
42 Correct 5 ms 1100 KB Output is correct
43 Correct 5 ms 1100 KB Output is correct
44 Correct 4 ms 1100 KB Output is correct
45 Correct 5 ms 1100 KB Output is correct
46 Correct 5 ms 1100 KB Output is correct
47 Correct 5 ms 1100 KB Output is correct
48 Correct 5 ms 1100 KB Output is correct
49 Correct 5 ms 1100 KB Output is correct
50 Correct 5 ms 1220 KB Output is correct
51 Correct 4 ms 1100 KB Output is correct
52 Correct 5 ms 1100 KB Output is correct
53 Correct 4 ms 1228 KB Output is correct
54 Correct 5 ms 1228 KB Output is correct
55 Correct 5 ms 1100 KB Output is correct
56 Correct 5 ms 1100 KB Output is correct
57 Correct 5 ms 1100 KB Output is correct
58 Correct 3 ms 1152 KB Output is correct
59 Correct 3 ms 1100 KB Output is correct
60 Correct 4 ms 1100 KB Output is correct
61 Correct 6 ms 1228 KB Output is correct
62 Correct 163 ms 38708 KB Output is correct
63 Correct 210 ms 36496 KB Output is correct
64 Correct 351 ms 36212 KB Output is correct
65 Correct 346 ms 36168 KB Output is correct
66 Correct 265 ms 36156 KB Output is correct
67 Correct 337 ms 36236 KB Output is correct
68 Correct 162 ms 38484 KB Output is correct
69 Correct 153 ms 36120 KB Output is correct
70 Correct 177 ms 37776 KB Output is correct
71 Correct 153 ms 36196 KB Output is correct
72 Correct 225 ms 36132 KB Output is correct
73 Correct 243 ms 36112 KB Output is correct
74 Correct 282 ms 36148 KB Output is correct
75 Correct 336 ms 36168 KB Output is correct
76 Correct 181 ms 35028 KB Output is correct
77 Correct 272 ms 34976 KB Output is correct
78 Correct 311 ms 35004 KB Output is correct
79 Correct 321 ms 34984 KB Output is correct
80 Correct 259 ms 35040 KB Output is correct
81 Correct 302 ms 35016 KB Output is correct
82 Correct 150 ms 37392 KB Output is correct
83 Correct 140 ms 35076 KB Output is correct
84 Correct 201 ms 35020 KB Output is correct
85 Correct 211 ms 34876 KB Output is correct
86 Correct 293 ms 35000 KB Output is correct
87 Correct 210 ms 34956 KB Output is correct
88 Correct 383 ms 36128 KB Output is correct
89 Correct 412 ms 36300 KB Output is correct
90 Correct 375 ms 36148 KB Output is correct
91 Correct 336 ms 36248 KB Output is correct
92 Correct 277 ms 38672 KB Output is correct
93 Correct 359 ms 36992 KB Output is correct
94 Correct 326 ms 36128 KB Output is correct
95 Correct 314 ms 36148 KB Output is correct
96 Correct 338 ms 36348 KB Output is correct
97 Correct 374 ms 36240 KB Output is correct
98 Correct 337 ms 36348 KB Output is correct
99 Correct 346 ms 36148 KB Output is correct
100 Correct 337 ms 36172 KB Output is correct
101 Correct 175 ms 37588 KB Output is correct
102 Correct 198 ms 37816 KB Output is correct
103 Correct 225 ms 38132 KB Output is correct
104 Correct 248 ms 38456 KB Output is correct
105 Correct 284 ms 38420 KB Output is correct
106 Correct 207 ms 36208 KB Output is correct
107 Correct 224 ms 36144 KB Output is correct
108 Correct 304 ms 36272 KB Output is correct
109 Correct 245 ms 36280 KB Output is correct
110 Correct 353 ms 36156 KB Output is correct
111 Correct 315 ms 36148 KB Output is correct
112 Correct 217 ms 36204 KB Output is correct
113 Correct 297 ms 36268 KB Output is correct
114 Correct 317 ms 36300 KB Output is correct
115 Correct 136 ms 35012 KB Output is correct
116 Correct 136 ms 35004 KB Output is correct
117 Correct 165 ms 36684 KB Output is correct
118 Correct 195 ms 36804 KB Output is correct
119 Correct 227 ms 36172 KB Output is correct
120 Correct 239 ms 38604 KB Output is correct